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Erie, CO
A 61-year-old male asked:

Bloodwork showed t4 is 15.5, tsh is .162, i think it was .62, and free thyroxine 5.3, t3 (liothyronine) uptake is normal at 34. i've stopped taking my l thryroine. how fast will the t4 drop? when to retest?

1 doctor answer1 doctor weighed in
Dr. Kenneth Smith
Internal Medicine 34 years experience
Hypothyroidism: Generally retest every six weeks after dosage adjustment. Have you discussed with your physician stopping medication. I do not know your dosage but cessation s opposed to reduction can be problematic.
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Last updated Jan 30, 2013


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